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Html file access is denied

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  1. ‘Access is denied’ Javascript error
  2. 4 Answers 4
  3. Access is denied error in IE while file uploading
  4. 1 Answer 1
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  9. Fix “access denied” error when parsing HTML as PHP with Nginx
  10. Nginx configuration block
  11. Error message
  12. Set security.limit_extensions
  13. Is it safe to do this?
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  15. Html file access is denied
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  24. FileUpload and htmlfile: Access is denied error
  25. 8 replies on “FileUpload and htmlfile: Access is denied error”

‘Access is denied’ Javascript error

if i use the same function from plain html page it is opening the page. But if i try to do the samething from ASP.NET2008(.ASPX page), i am getting ‘access is denied’ error. can anybody tell the reason why it is giving error? and Solution? Thanks

4 Answers 4

You are trying to access a file on the hard drive which you aren’t allowed to do from a page from a web server.

It’s a browser security feature. It won’t allow you to directly access the hard drive from a web page. You can access it when you open an HTML file on the local system — since the browser isn’t granting you any more abilities than you already have, but allowing a web page to open a file on a local hard drive would be a huge security flaw.

The only way I know to do things like this are through trusted plugins/applets — such as ActiveX or Java Applets. These need to be signed and/or have the user explicitly trust them with access to your system to get them to work.

Читайте также:  Латентное размещение дирихле python

If you are learning html and want a way to open pages in your machine from pages in your machine:

window.open("file:///C:/Searchtool/asd1.wrl", "mywindow", "location=1, status=1,scrollbars=1,width=300,height=300");

Isn’t this possible? Since you can open local pages with file:/// protocol, I thought it would go well in script too — didn’t bother to test it.

Just tested it and it is possible — why the down-vote then? I specifically said that this can be used only to open pages in your machine from pages in your machine.

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Access is denied error in IE while file uploading

I am currently working on a new site under .NET MVC platform and I am trying to implement an asynchronous user upload image through iframe. Although I almost complete my task and is fully functional in any other browser fails in IE 9 with the follow error: Microsoft JScript runtime error: Access is denied. It looks like a security concern. Allow me to describe my issue using below code snippets with comments: 1. I have an html form with an input file that its visibility is hidden. Inside the form there are one input element with type=»file» and a submit button (also hidden).

  1. The html form tries to post the file to an iframe via javascript. Both form and iframe are on my local project (asp.net mvc) under the same domain ( i run this under localhost).
  2. I am using an on change event on the input element to capture that user selected something and to trigger the submission of the form with ajax call. So when I call via javascript: $(«#formID»).submit() I get an access denied error.

Any help would be appreciated

1 Answer 1

I saw this IE bug before,finally I changed my method .triggering change event of input element programmically consider as security risk by IE 🙁 (so stupid IE)

By default IE not let you trigger file element change, if you want you this feature can use ajaxuploader or fileuploader

var uploader = new qq.FileUploader(< // pass the dom node (ex. $(selector)[0] for jQuery users) element: document.getElementById('file-uploader'), // path to server-side upload script action: '/server/upload' >);

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Fix “access denied” error when parsing HTML as PHP with Nginx

If you are attempting to get files with a .html extension parsed as PHP with Nginx + php-fpm, you might get an “access denied” error in your browser, and the error message “Access to the script ‘…’ has been denied (see security.limit_extensions)” in your Nginx error log. This post shows how to allow html files to be parsed successfully as PHP with Nginx + php-fpm.

Nginx configuration block

Your Nginx configuration block will look something like this to parse HTM files as PHP:

Error message

And yet when you access e.g. somefile.html you get “Access denied” in the browser.

You check the Nginx error log and see this:

2015/04/25 07:38:28 [error] 5942#0: *108814 FastCGI sent in stderr: “Access to the script ‘/path/to/somefile.html’ has been denied (see security.limit_extensions)” while reading response header from upstream, client: 192.168.1.54, server: www.example.com, request: “GET / HTTP/1.1”, upstream: “fastcgi://unix:/var/run/php5-fpm.sock:”, host: “www.example.com”

The fix needed is suggested in the error message: “see security.limit_extensions”

Set security.limit_extensions

On Debian 7 Wheezy, the configuration file to edit this setting is at /etc/php5/fpm/pool.d/www.conf; on other distributions it may be in a different place.

Then search for security.limit_extensions. It should look something like this in the file by default:

; Limits the extensions of the main script FPM will allow to parse. This can ; prevent configuration mistakes on the web server side. You should only limit ; FPM to .php extensions to prevent malicious users to use other extensions to ; exectute php code. ; Note: set an empty value to allow all extensions. ; Default Value: .php ;security.limit_extensions = .php .php3 .php4 .php5

If the security.limit_extensions has been set already, then add .html to it; if it hasn’t then add it in with all the extensions you need to allow, e.g.:

security.limit_extensions = .php .html

Is it safe to do this?

When enabling this myself, my first thought was “Is this safe” and “Can a regular HTML file suddenly be parsed as PHP” and then obviously “Will this cause security issues with any WordPress blogs installed on my server?”

As far as I can tell, it shouldn’t cause any issues, because you still have to allow .html files to be parsed through php-fpm in the Nginx config. If you haven’t done that, then they won’t.

If I am wrong, please add a comment below.

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Html file access is denied

Gray Pipe

Asked by:

Question

User-1563279401 posted
I’ve tried to create dummy element that have «onclick» event handler, in handler I’ve invoke html fileupload click event by call it’s click() directly. When I click my dummy element, file browser dialog box popup as expect. I’ve selected file and press OK, everything work fine. But when I’ve click on other button with input type=submit in the same form, problem is IE reset filename that I’ve already choose and not do anything (no postback). Then I’ve tried to add «onchange» event handler for html fileupload to auto postback, error occur in different way. IE show htmlfile: access is denied.
Could you guys advice me please. Thanks in advance.

All replies

User1873365718 posted
Hey there,

Did you ever get a FIX for this issue ..I have spent that last 2 days fighting it 🙂 🙂
Please let me know.

Thanks in advanced,
Filippo

User844797000 posted
Hi, you cannot directly use the file uploader controls for other pupose like setting values, clearing values and for click. you can get he values, hide, disable and enable. if you want to do this, you need to make a copy of the existing element and then use. this is not a secure process. you can try alternate option. instead of using upload.click();, try to call button click.

User1873365718 posted
Hi,

OK let me say what i need to achieve and see if you can help
. cause this error it’s killing myself 🙂 🙂 The user clicks on an OPEN button, so I need to show the file input dialog so the user can select a local file.
After the file is selected, the javascript should either do something locally or if the file extension is PDF the page needs to upload the file to the server and redirect somewhere else. So I’m not really setting values, i just need to be able to get a path of a local file and only on some occasions upload the file to the server . ALL IN ONE CLICK. That’s my problem, the application needs to work «all in one click». I even tried to display a in modal form with an upload button, but . i always get that htmlfile error access denied. I’m not sure what you meant by «try to call button click». Thanks in advanced. BTW, the application is an Intranet so i can play a bit with security (if needed).

User844797000 posted
Hi, try the below one. < html xmlns ="http://www.w3.org/1999/xhtml" > < head runat ="server"> < title >Untitled Page < script type ="text/javascript" language ="javascript">function checkFile() < var fup = document.getElementById( "file" ); var fi = fup.value; if (fi.length >0) < var ext = fi.substring(fi.lastIndexOf( '.' ) + 1); if (ext == "pdf" ) < return true ; >else < alert( "Select PDF files only" ); return false ; >> else < alert( "Select file to upload" ); return false ; >> < body > < form id ="form1" runat ="server"> < div >< asp : FileUpload ID ="file" runat ="server"/> < br/> < br/>< asp : Button ID ="submit" runat ="server" Text ="Button" OnClientClick ="return checkFile();"/>

User1873365718 posted
The problem here is that I don’t have the «file.value» filled unless i call somehow programmatically the «file.click()»
..to show the folder dialog box.

Remember that this operation should be initiated from ONE SINGLE CLICK ..on a .

User798903548 posted
I don’t think that you can do that any more. For instance, this used to work, but the new security settings in IE 7 prevent it from working now.

You could never have been able to do all that you want anyway, as you could not really get a path of a local file and only on some occasions upload the file to the server. You do not have access to that file on the client-side (JavaScript), unless you use an (IE only) ActiveX object installed on the client’s machine. This would be a massive security violation if you could. NC.

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FileUpload and htmlfile: Access is denied error

Code Corner

Code Corner

If you use ASP.NET FileUpload control or control in Internet Explorer on Windows XP SP2 or later, trying to enter file path manually may cause “htmlfile: Access is denied error” error if entered string is not well formed local or UNC path.

The reason is that the control in Internet Explorer after version 6 in Windows XP SP2 does not allow relative path and if the form is submitted via Javascript form.submit method (like for example a __doPostback() call in ASP.NET) you will get untrappable error from above, if the form is submitted by an button you won’t get any notice at all.

The way to work around this issue is to catch invalid file name prior form being sumbitted. Add onclick event to your submitting button (OnClientClick if this is ASP.NET server side button) and add following code to it:

onclick=”if (!FilePathIsValid()) return false;”

then add following JavaScript function to your code:

function FilePathIsValid() var reg = /^(([a-zA-Z]:)|(\))(\|((\)[^\]([^/:<>”|]*))+)$/g
if (!reg.test(document.getElementById(‘xfuFile’).value)) alert(‘Please enter valid file path’);
return false
> else
return true
>

where ‘xfuFile’ is the name of your FileUpload control. The function uses Jens K. Suessmeyer’s RegEx Expression to test if the file path is well formed. If it’s not – user gets error message and the form is not submitted.

8 replies on “FileUpload and htmlfile: Access is denied error”

My Javascript function is This is my file upload control .This can be html file control as well.Both are same. function BrowseClick()
var formObject = document.forms[0];
formObject[‘fileBrowse’].click();
var addedFilePath = formObject[‘fileBrowse’].value;
> Inside this function, I am making the fileUpload control click event to fire.
I am getting the exception “htmlfile: Access is denied error” when I looked into the dynamically created html code for my web page, it has
” Sourabh?? How did u removed the name attribute and make it to work. name attribute automatically gets added when the page is rendered as html. plz guide me

Sorry..following code missed in my last post as I pasted the html code. when I looked into the dynamically created html code for my web page, it has
“input type=”file” name=”fileBrowse” run=”server”

@Sathishkumar hi did u already solve this proble….we have the same problem…pls share if you have something there

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